they use the 323 V6 lantis edition lsd gearbox which is a import mazda 323, it requires custom built/modified driveshafts using lantis and mx-3 shafts ( only needed on one side apparantely )
these are as rare as rocking horse plop as alot of the 323f.com guys have tried and tried.

im thinking of a low mileage mx6 box and www.quaife.co.uk lsd put into the box, its on my to do list for end of this year. :(